28700118 has 12 divisors (see below), whose sum is σ = 62183628. Its totient is φ = 9566700.

The previous prime is 28700107. The next prime is 28700129. The reversal of 28700118 is 81100782.

It is an interprime number because it is at equal distance from previous prime (28700107) and next prime (28700129).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28700091 and 28700100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 797208 + ... + 797243.

It is an arithmetic number, because the mean of its divisors is an integer number (5181969).

Almost surely, 2^28700118 is an apocalyptic number.

28700118 is an abundant number, since it is smaller than the sum of its proper divisors (33483510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28700118 is a wasteful number, since it uses less digits than its factorization.

28700118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594459 (or 1594456 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 28700118 is about 5357.2491075178. The cubic root of 28700118 is about 306.1690082647.

The spelling of 28700118 in words is "twenty-eight million, seven hundred thousand, one hundred eighteen".